<template>
  <li   :class="isEnter?'active' :' '"  @mouseenter="mouseChangeHandle('enter')" @mouseleave="mouseChangeHandle('leave')">
        <label> 
                <input type="checkbox" :checked="done"  @click="checkboxChange(id)"/>
                <span>{{ thing }}</span>
        </label>
    <button class="btn btn-danger" @click="deleteItem" :id='id'>删除</button>
  </li>
</template>

<script>
export default {
    name:"Item",
    props:['id','thing','done','deletes','checkboxChange'],
    data() {
        return {
            isEnter:false
        }
    },
    methods:{
      //鼠标移入事件 加style
        mouseChangeHandle(type){
            this.isEnter = type ==='enter'
        },
      //删除事件
        deleteItem(){
          this.deletes(this.id)
        }
    }

}
</script>
<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

.active {
    background: #ccc;
}
.active button{
    display: block;
}
</style>